Results 1 to 4 of 4

Thread: chevy ccruze 2013 hesitting before acceleration

  1. #1
    Tuner in Training
    Join Date
    Apr 2017
    Location
    california
    Posts
    21

    chevy ccruze 2013 hesitting before acceleration

    hey all I need some opinion this is a file of a 2013 chevy cruze with the 1.4l in it.
    the car upon start up idle fine then as it warms up get a little sputter.when put in gear and start to take of it starts studdering and continues to do it constantly while driving.to me it feels worse upon takeoff from stops almost like a fuel and airflow not adjusting correctly almost like its intaking more air than the engine can supply fuel... it has a 02 dtc and maf dtc on they've sent it to the shop 2 times they say they fixed it and runs fine for about a month the starts it again...
    Attached Files Attached Files

  2. #2
    Tuner ZeroBoostBuick's Avatar
    Join Date
    Aug 2008
    Location
    S.W. Ontario Canada
    Posts
    173
    Super late reply, but wondering if you solved the issue.
    Last edited by ZeroBoostBuick; 04-13-2018 at 01:48 AM.

  3. #3
    Tuner in Training
    Join Date
    Feb 2019
    Location
    Lodi, CA
    Posts
    36
    Yes, I know this is necromancy for posting to this thread, but I was just curious to see what the logs look like, as I had something I though was similar... then I saw the log. I'd say, just taking a guess, it's from rapacious, engine destroying knock. I could imagine the engine detonated to the point to where it collapsed in upon itself, creating a rip in time/space.


    WHOA.jpg

    There was a lot that should have been logged in the channels that weren't, but upon checking the tune, I cannot make heads or tails of where this was going. I would guess full throttle at 1500-2500 RPM in closed loop, commanding 14.13 with ~21 degrees of spark advance in 105 F weather (maybe in 2nd gear or something.) would likely have caused the "stutter", among other things.

    Admins: I actually just wanted to see if I read the logs right. Just trying to get my eyes more in tune with tuning. Again, sorry for the necromancy, but this would be a good example of things not to do at all. Perhaps someone more knowledgeable can look at the tune and see maybe what was being attempted and what could have been done to make sure that the computer protects itself from trying to make power like that (disabling PE below a certain RPM, lowering peak torque at lower rpms, or in automatics, in certain gears vs. rpm, etc).

    I don't think it would hurt to have examples of things that can destroy your motor alongside things that make the engine purr. The more info the better, I figure. Lol. Also, if my assumptions above from the log are wrong, please correct me so that I can learn as well.
    Attached Images Attached Images

  4. #4
    Tuner Boost's Avatar
    Join Date
    Dec 2006
    Location
    Florida, USA
    Posts
    163
    put it stock with 93 octane and see if it still does it. I had 12 degrees audible KR on a stock one after heat soaking in traffic then accelerating
    - Roland
    GM dealer tech since 2005
    '01 Z28 LS1/T56
    t-tops
    stock 241 heads, stock cam,
    stock muffler, factory wheels

    8.2 @ 86
    (1/8th mile with 255 Toyo Proxes)
    I am learning...